1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ostrovityanka [42]
3 years ago
14

A hydrogen filled balloon has a volume of 8.3 L at 36°C and 751 mmHg. How many moles of hydrogen are inside the balloon?

Chemistry
1 answer:
tamaranim1 [39]3 years ago
8 0

Answer: I think the formula is PV=nRT and I divide both sides by RT, but this is as far as I can get in my equation before I get stumped: (751 mm Hg) (8.3 L)/ (309 K) Can you help?

Explanation:

You might be interested in
An endothermic reaction _____.
Over [174]
Release less energy than it uses
6 0
3 years ago
Calculate the mass of 3.5 mol C6H6
Lilit [14]
(3.5mol)(24.106 g/1mol c6h6) =84.371 g C6H6
4 0
3 years ago
What super power would you want to have and why?<br><br> I will give Brainly to the best answer
Darya [45]

Answer:

If I could have a super power it would be invisibility. Sometimes you wish you weren't there and if you were hiding from someone then they couldn't find you.

3 0
2 years ago
A sample of 28 Mg decays initially at a rate of 53500 disintegrations per minute, but the decay rate falls to 10980 disintegrati
prisoha [69]

Answer : The half life of 28-Mg in hours is, 6.94

Explanation :

First we have to calculate the rate constant.

Expression for rate law for first order kinetics is given by:

k=\frac{2.303}{t}\log\frac{a}{a-x}

where,

k = rate constant

t = time passed by the sample = 48.0 hr

a = initial amount of the reactant disintegrate = 53500

a - x = amount left after decay process disintegrate = 53500 - 10980 = 42520

Now put all the given values in above equation, we get

k=\frac{2.303}{48.0}\log\frac{53500}{42520}

k=9.98\times 10^{-2}hr^{-1}

Now we have to calculate the half-life.

k=\frac{0.693}{t_{1/2}}

9.98\times 10^{-2}=\frac{0.693}{t_{1/2}}

t_{1/2}=6.94hr

Therefore, the half life of 28-Mg in hours is, 6.94

8 0
3 years ago
Calculate the energy released when 24.8 g Na2O reacts in the following reaction
WARRIOR [948]

Answer:

hey you wanna get it right try this one: 48.0 kcal

was released... at constant pressure.

Explanation:

5 0
3 years ago
Other questions:
  • A student takes a measured volume of 3.00 M HCl to prepare a 50.0 mL sample of 1.80 M HCl. What volume of 3.00 M HCl did the stu
    14·2 answers
  • sample of saline contains 45 ml of saline in 128 ml of water. What is the percent by volume of the solution?
    8·1 answer
  • At the normal melting point of NaCl, 801 degrees C, its enthalpy of fusion is 28.8 kJ / mol. The density of the solid is 2.165 g
    10·1 answer
  • As a Ca atom undergoes oxidation to Ca2+, the number of neutrons in its nucleus
    14·2 answers
  • What must be true of a substance with a lot
    8·2 answers
  • Use this interactive illustration to examine the movement of the continents over the past 600 million years.Which phrase describ
    8·2 answers
  • Cells can regulate different processes in two ways. They can turn on and off the genes that make enzymes, or they can
    15·1 answer
  • Which of the following is the best example of water changing from a liquid to a gas?
    10·2 answers
  • Which element has 13 protons and 8 neutrons?
    8·2 answers
  • How would you distinguish benzoic acid and benzyl alcohol by their infrared spectra?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!